Calibration method and device of active noise reduction system of wearable equipment, storage medium and terminal

The invention discloses a calibration method and device of an active noise reduction system of wearable equipment, a storage medium and a terminal. The wearable equipment comprises the active noise reduction system. The method comprises: starting the active noise reduction system, enabling an audio playing module to play a noise test signal, and collecting the noise test signal through a sound collection module; calculating secondary path estimation of the active noise reduction system; stopping playing the noise test signal, turning off the active noise reduction system, playing the environmental noise through an external playing module, and measuring a passive noise reduction level; configuring initial parameters of the active noise reduction system, wherein the initial parameters comprise the secondary path estimation; starting the active noise reduction system, enabling an audio playing module to play a noise reduction signal and measuring an active noise reduction level; and when the difference value bet